I didn’t know until just now that penguins are properly described as sphenisciform seabirds. I’m not sure why, or whether it’s a relative of such words as sphenoid, which describes anything wedge-shaped, or a sphenogram, a word that means “a cuneiform character.”

In any case, if you’re as partial to penguins as some people are to pandas, you’ll want to check out the Sphenisciform Webring, which has more information about penguins than you can shake a flipper at.